import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/login.vue'
import Home from '../components/home.vue'
import Welcome from '../components/welcome.vue'
import Users from '../components/user/users.vue'
import Rights from '../components/power/rights.vue'
import Roles from '../components/power/roles.vue'
import Catalog from '../components/goods/cata.vue'
import Params from '../components/goods/params.vue'
import List from '../components/goods/list.vue'
import Add from '../components/goods/add.vue'
import Order from '../components/order/order.vue'
import Report from '../components/report/report.vue'
Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    redirect: '/welcome',
    children: [{
      path: '/welcome',
      component: Welcome
    },
    {
      path: '/users',
      component: Users
    },
    {
      path: '/rights',
      component: Rights
    },
    {
      path: '/roles',
      component: Roles
    },
    {
      path: '/categories',
      component: Catalog
    },
    {
      path: '/params',
      component: Params
    },
    {
      path: '/goods',
      component: List
    },
    {
      path: '/goods/add',
      component: Add
    },
    {
      path: '/orders',
      component: Order
    },
    {
      path: '/reports',
      component: Report
    }]
  }
]

const router = new VueRouter({
  routes
})
// router.beforeEach( (to, form, next) => {} 路由导航守卫
// to:将要访问路径 form：从何路径跳转 next：放行函数
router.beforeEach((to, form, next) => {
  // 访问登录页，直接放行
  if (to.path === '/login') return next()
  // 访问非登录页面 先查找token
  const tokenStr = window.sessionStorage.getItem('token')
  // 无token值，强制跳转到登录页
  if (tokenStr == null) return next('/login')
  // 有token值 直接放行
  next()
})

export default router
